Soldering mechanism for cans



SOLDERINQ MECHANISM FOR CANS Filed April 26. 1922 2 Sheets-Sheet 1 Dec. 4 1923.

A. L. KRONQUEST SOLDERING MECHANISM FOR CANS File Ap il 26. 1922 2 Sheets-Sheet 3 jnveufoz l Patented Dec. 4, 1923. I

UNITE STATES PATENT OFFICE.

ALFRED L. xnoNoons'r, or (intense, ILLINOIS, ASSIGNOR 'ro CONTINENTAL CAN com- PANY, me, or SYRACUSE, NEW YORK, A CORPORATION or NEW YORK.

SOLDERING MECHANISM FOR CANS;

Application ,filed April 26, 1922. 'Serial N0. 556,690.

To allwhom it concern: through the soldering bath, the solder roll, Be it known that I, ALFRED L. KRoN- and the means for supporting and moving QUEST, a citizen of the United States, residthe can bodies along said soldering roll;

ing at Chicago, in the county of Cook, State Fig. 2 is a transverse sectional view 5 of Illinois, have invented certain new and throu h the upper portion of the machine useful Improvements in Soldering Mechand t e upper portion of the solder roll; anisms for Cans, of which the following is Fig. 3 is an enlarged view of a portion of a description, reference being had to the acthe solder roll showing two can bodies movcompanying drawing, and to the figures of in? along the same, and

reference marked thereon. ig. 4 is an enlarged sectional view The invention relates to new and useful through a portion of the roll of one of the improvementsin solderin mechanisms for can bodies showing the bowed side seam cans, and more particular y to a soldering making uniform contact with the soldering mechanism for soldering the side seam of a roll.

can. The invention is directed broadly to a It is well known that when the side seam can body side seam soldering machine, and

of a can is being soldered that the side seam includes a solder bath in which is located a bows outwardly intermediate its ends by solder roll. This solder roll is only partly reason of the heat incident to the appl ing immersed in the solder bath and is rotated of the solder, and therefore, in using so derso that it becomes coated with solder. ing irons, as heretofore formed, the central Means is also provided for moving the can portion of the seam is likely to receive too bodies lengthwise of the soldering roll, so

' much solder, while the end portions of the that the 'side seam may make contact thereseam do not receive suflicient solder. with and have solder applied thereto.

An object of the present invention is to It is well known that the side seam of a provide a soldering roll which is shaped to can body bulges or bows outwardly inter- .conform to the side seam whenbowed outmediate its ends when the metal forming wardly by the heat incident to soldering so the side seam is heated as a step incident to I that said roll makes uniform contact with the applying of the solder'to the side seam.

3 the side seam throughout substantially its One'of the purposes of the present invenentire length. tion is to provide a soldering roll which is vA further object of the invention is to so shaped as to conform to this bowed conprovide a soldering roll of the above chardition of the side seam, so that said bowed acter with a series of=annular right-angled side seam will makeuniform contact with 36 grooves which produce a longitudinally inthe soldering roll throughout its entire terrupted soldering surface so that the sollength and thus the solder will be uniformly der has a chance to drain ofitrom the side applied to the side seam. This shaping of eam at the end thereof. the roll is accomplished by forming a spirally A still further object of the invention is laid concave surface which is of substanto provide a soldering iron of the above tially the same length as the can body or type with-tapered ends so that a can body slightly longer than the same, and said conwill gradually make contact therewith and cave spiral 18 so formed that when the sol will not come in contact with the soldering dermg roll is driven 1n proper timing and roll until said can body is completely over the can bodies moved lengthwise of the 501- the roll. dering roll, also in proper timing, the an These and other objects will in partbe bodies will bespaced one from another a obvious and will in part be hereinafter slight distance and will follo th concave more fully disclosed. spiral so that a concave portion of the sol- In. the drawings which show by way of dermg roll 1s always presented to the bowed illustration a portion of the machine emside seam.

bodying the improvement- The soldering 1'011 is 8180 provided with" I Figure 1 is a longitudinal sectional view a series of closely spaced right-angled description of these features is ooves, which interrupts the soldering sun ace and gives the solder a chance to flow away from the rear end of the side seam and thus prevents the solder from accumulating at the rear end of the seam in flowing up on to the inside of the can. The soldering roll is also tapered at its end so that the can body is well over the solderin roll beliiore making contact with the sol ering r Referring more in detail to the drawings, the improved soldering machine includes the usual supporting frame 1 on which is mounted a tank 2. This tank 2 contains the solder 'bath which is indicated at 3. Said tank is preferably mounted upon adjustable supports 4, 4 so that the same may be raised or lowered to bring the solder roll mounted in the .tank into proper contact with the side seam.

The solder roll is indicated at 5. Said solder roll is provided with a, stub shaft 6 which is mounted in a bearing 7 located wholly within the tank and also with a stub shaft 8 which is mounted in a bearing 9 carried by the tank but so disposed that the stub shaft 9 extends to a point outside of the tank. On said stub shaft is a sprocket wheel 10 driven by a sprocket chain 11.

The can bodies are indicated at C. Said can bodies are carried through the machine b a traveling chain 15. Said traveling cii ain is provided with a sustaining lug 16 and a pushing lug 17. The can bodies are supported by magnetic railsor tracks 18, 18 which are energized by magnetic coils 19. The can bodies are supported by these magnetic tracks and caused to slide along the same by the traveling chain. This conveying means forms no part of the present invention, but is shown, described and claimed in the application of Alfred L. Kronquest and Frank A. Assmann, Serial Number 529,147, filed January 14, 1922, and further not thought necessary. It may be noted that the can body travels between adjustable side guides 20, 20, and is held in proper relation to the soldering roll by guides 21, 21.

The solder roll is partly immersed in the solder bath and is rotated. The solder roll will be coated with solder as it rotates, and thissolder will be applied to the side seam. It is noted that the can bodies, travel lengthwise of' the solder roll. The solder roll is tapered at each end thereof as indicated at 22, and the purposeof tapering the solder roll is to permit the can body to move to a point well over they side of the roll before it makes contact therewith. The solder roll is also provided with a series of closely spaced right-angled grooves 23. This forms an incontinuous surface,

terrupted soldering surface along which the sideseam travels. When the surface is one the solder accumulates seam or on theinside of the can body at the end of the side seam is very objectionable. By interrupting the soldering surface, the solder has a chance to drain off from the end of the'side seam which prevents this objectionable accumulation.

As above noted, the side seam when heatedincident to theapplying of the solder, bows or buckles outwardly intermediate its ends, and if the soldering roll had a straight surface, it would make contact with the side seam intermediate its ends to a greater extent than at the ends, so that the solder would not be uniformly applied. To overcome this objection, the solder roll is provided with a concave surface 24. This concave surface extends from the point a to the point a in Figures 3 and 4!, and the length of the concave surface is slightly longer than the length of the can being soldered. Said concave surface is also shaped to conform to the bowed side seam, so that the solder will be uniformlyapplied to the side seam. This roll is spiconcave surface in the soldering roll may be rally formed therein so that sai timed to the endwise travel of the can. bod

whereby the concave surface will follow the travel of the can body so that a \concave surface ispresented to the can body during the entire time that it is in contact with the solder roll. The high portions between the concave surface are indicated by the broken lines a: and y in Fig. 3, which clearly shows how the concave surface is laid.

It will be noted from the above that 8. S51- 1 der roll has been provided wherein the can body travels longitudinally of the roll, and at the same time the roll is shaped so as to present a surface to the side seam whichis curved to conform to the bowing of the side seam, and this insures a uniform applying of solder throughout the entire extent of the side seam.

It is obvious that minor changes in the details of construction and the shaping of the parts may be made without departing from the spirit of the invention'as set forth in the appended claims.

Having thus described the invention, what I claim as new and desire to secure by Letters Patent, is-

1. A solder machine includin bination, a solder bath, a solder roTl disposed in said bath, means for rotating said soldering roll, and means for moving can bodies in comendwise of the roll as it-rotates with the side seam of-the can body positioned to make contact w1th the roll, said solder roll being shaped so as to make uniform contact with the side seam throughout its entire length when said side seam is bowed outwardly by the heat incident to soldering.

2. A solder machine inclu ing in com ination, a solder bath, a solder roll dispo ed in said bath, means for rotating said soldering roll, and means for moving can bodies endwiseof the roll as it rotates with the side seam of the can body positioned to make contact with the roll, said solder roll having a spirally laid concave portion conforming to the shapeof the side seam when said side seam is bowed outwardly by the heat inci-.

' to the shape of the side seam when said side seam is bowedoutwardly by the heat incident to soldering, said means for rotating the roll and for moving the can bodies being so timed asto continue to present said concave surface to the side seam of the can body.

4. A solder machine including in combination, a solder bath, a solder roll disposed in said bath, means for rotating said soldering roll, and means for moving can bodies endwise of the roll as it rotates with the side seam of the can body ositioned to make contact with the roll, sald solder roll being shaped so as to make uniform contact with the side seam throughout its entire length when said side seam is bowed outwardly by the heat incident to soldering, saidsoldering I roll having a series of right-angled grooves ,formin a longitudinally interrupted soldering sur ace. I n 5. A solder machine including in combination, a solder bath, a solder roll disposed in said bath, means 'for' rotating said solder ing roll, and means for moving can bodies endwise of the. roll as it rotates with the side 1 permitthe can body to be wholly over the seam of the can body positioned to make contact with the roll, said solder roll having a spirally laid concave portion conforming to the shape of the side seam when said side seam is bowed outwardly by the heat incident to soldering, said solder roll having a series of right-angled grooves forming a longitudinally interrupted soldering surface.

' 6. A solder machine including in combination, a solder bath, a solder rolldisposed in said bath, means for rotating said soldering roll, and means for moving can bodies endwise of the .roll as it rotates with the side seam of the can body ositioned to make contact with the roll, said solder roll being shaped so as to make uniform contact with the side seam throughout its entire length when said side seam is bowed outwardly by the heat incident to soldering, said solder roll having its ends tapered so as to permit the can body to be wholly over the solder rollwhen in contact therewith.

7. A solder machine including in combi nation, a solder bath, a solder roll disposed in said bath, means for rotating said soldering roll, and means for moving can bodies endwise of theroll as it rotates with the side seam of the can body positioned to make contact with the roll, said solder rollhaving a spirally laid concave portion conforming to the sha e of the side seam when said side seam is owed outwardly by the heat incident to soldering, said solder roll having its ends tapered so as to permit the can body to be wholly over the soldering roll when making contact therewithi 8. A solder machine including in combination, a solder bath, a solder roll disposed in said bath,-means for rotating said solderingroll, and means for moving can bodies endwise of the roll as it rotates with the side seam. of the can body positioned to make contact with the roll, said solder roll having a spirally laid concave portion conforming to the shape of the side seamwhen said side seam 1S bowed outwardly by the heat incident to soldering, said means for rotating the roll and-for moving the can bodies being so timed as tocontinue to present said concave surface to the side seam of the can body, said solder roll having its ends tapered so as to solder roll when making contact therewith. 

